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Finding the Fourth Proportional to 451.32, 672.54 and 436.62

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Solution

The fourth proportional to 451.32, 672.54 and 436.62 is: 650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.32 : 672.54 = 436.62 : x
  2. Step 2: Convert to fraction form
    451.32/672.54 = 436.62/x
  3. Step 3: Cross multiply
    451.32x = 672.54 × 436.62
  4. Step 4: Simplify right side
    451.32x = 293,644.41
  5. Step 5: Solve for x
    x = 293,644.41/451.32
  6. Step 6: Final answer
    x = 650.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.